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1-20 of 797
Keywords: borehole
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Proceedings Papers
Secondary mineralization in Deccan basalt and its effects on mineral carbonation and seismic properties
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-w08-01
...-parametric geoscientific investigations on the Killari borehole basalts, located in the southern part of the Deccan Volcanic Province, indicate that the presence of chlorophaeite and opaque minerals in the rock groundmass significantly contributes to this anomalous behavior. This finding is pertinent...
Proceedings Papers
Multipole borehole acoustics in the presence of an constraints elastic tool
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4090706
... In this paper we present a mathematical formulation for the borehole fluid multipole wavefield due to a unipole excitation. Unipole source and multipole receiver array are axially offset from each other and located on the rim of an eccentered elastic tool submersed in a fluid-filled borehole...
Proceedings Papers
Four-component dipole shear-wave reflection imaging in high-angle wells
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4091753
... Borehole acoustic-wave reflection imaging technology is now widely used in high-angle and/or horizontal wells to delineate geological features in the formation surrounding the well. We develop an application that combines the fourcomponent dipole shear-wave azimuthal imaging with a coordinate...
Proceedings Papers
Effects of tool eccentricity on acoustic logging: Theory and field example
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4095575
... Tool eccentricity is a common occurrence in complex borehole environments, such as large boreholes, highly deviated wells or horizontal wells. Therefore, we analyze the model of acoustic logging with an eccentric tool in a dual-cylindrical coordinate system centered on the tool and borehole...
Proceedings Papers
The potential of borehole seismic monitoring techniques at the field scale for leakage and well integrity assessment in CO 2 injection projects
Available to PurchaseNicolás D. Barbosa, Andrew Greenwood, Eva Caspari, Michael Jordan, Marcin Ireneusz Duda, Bastien Dupuy, Amir Ghaderi, Peder Eliasson
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099280
... In this study, we explore the use of different wavefields recorded in VSP surveys to conduct time-lapse seismic monitoring of CO 2 migration in the subsurface. To do so, we perform a series of VSP experiments employing a surface source and an array of borehole hydrophones to establish...
Proceedings Papers
Site characterization and reservoir monitoring using time-lapse SQUID-TEM survey
Available to PurchaseMichael S. Zhdanov, Alexander Gribenko, Leif Cox, Keiichi Tanabe, Tsunehiro Hato, Akira Tsukamoto, Hironori Wakana
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100380
... borehole before and after the seawater/CO2 fluid injection and determine the injected fluids location after the injection. The results of the inversion of the post-injection survey data clearly showed the location of the conductive zone associated with the injected seawater/CO2 in the reservoir...
Proceedings Papers
Geothermal exploration at Kijiyama KJ-5 hot geothermal borehole in Northeastern Japan using DTS and DAS
Available to PurchaseJunzo Kasahara, Yoko Hasada, Masaru Suzuki, Tomohiro Takahashi, Hitoshi Mikada, Hiroshi Ohnuma, Yoshihiro Fujise
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3912932
... We conducted geophysical explorations in the Kijiyama geothermal field to determine subsurface structures using DTS and DAS measurements in a hot geothermal borehole. The temperature reached 288ºC at the borehole depth of 2 km. We determined the 3D Vp structures that satisfied the geological...
Proceedings Papers
Horizontal well S-wave imaging method and application
Available to PurchaseHongliang Wu, Peng Liu, Ning Li, Yi Huang, Hao Zhang, Wenhao Zhang, Han Tian, Yusheng Li, Zhou Feng, Yongjian Zeng
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3905250
... from the borehole. upstream oil & gas drilling operation geology directional drilling reservoir boundary complex reservoir log analysis fracture well logging china government imaging geological subdiscipline geologist asia government hydraulic fracturing reservoir...
Proceedings Papers
Delineating buried metallic pipes using borehole magnetic data in civil engineering
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3909724
... measured in shallow boreholes. The method relies on the parametric inversion of magnetic data from multiple boreholes and uses line segments to represent unknown metallic pipes. We have tested the validity of the approach using synthetic datasets and applied it in an on-going infrastructure project. Both...
Proceedings Papers
Research on borehole time-domain electromagnetic ultra-far detection method of electrical source
FreeZhanshan Xiao, Haitao Hu, Xiaoyu Zhang, Yonghao Zhang, Jianbin Zhao, Chaoqiang Fang, Kun Shao, Chunming Yao, Junjie Yan
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3908992
... The current research on time-domain electromagnetic detection methods for well boreholes is proposed based on the magnetic source measurement mode. Compared with magnetic sources, the electrical source measurement mode, both electrical and magnetic signal acquisition can be used. Its measurement...
Proceedings Papers
Hydraulic fracture width determination using integration of Stoneley wave “pressure testing” with electrical borehole scans in FORGE Geothermal project
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3746406
... In a well drilled in the DOE FORGE Geothermal test site both electrical borehole scans acquired using Schlumberger’s Formation Micro-scanner Image tool (FMI) and Stoneley waves generated by a borehole sonic tool are used together in a workflow using the strengths of both techniques...
Proceedings Papers
A quantitatively determining gas saturation method by pulsed neutron logging technique in complex cased borehole
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750434
... gamma-ray counts, the capture gamma-ray count ratio and inelastic gamma-ray count ratio from different detectors, a new characterization of the fast neutron cross-section can achieve self-compensation under borehole gas-bearing and the complex completion. Note: This paper was accepted...
Proceedings Papers
ML-based deconvolution method for high-resolution fast inversion of induction log data in deviated wells
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3727331
... borehole upstream oil & gas log analysis resistivity american association artificial intelligence boundary ml-based deconvolution method exploration geophysicist applied geoscience annual logging symposium ML-based Deconvolution Method for High Resolution Fast Inversion of Induction Log...
Proceedings Papers
Borehole tube wave generation by an incident P-wave at a fluid-filled fracture
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751011
... Borehole guided waves (tube waves) are dominant acoustic waves in borehole seismic data. Tube waves can be exploited to characterize the hydraulic properties of fractures intersecting the borehole. Several theoretical tube-wave generation models have been proposed earlier in order to link...
Proceedings Papers
Wave scattering by the formation velocity perturbation surrounding a fluid-filled borehole
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751189
... Heterogeneous elastic property variation in the rock formation surrounding a borehole can cause wave scattering in the borehole acoustic waveforms, which in turn can be used to characterize the formation heterogeneities. Considering the elastic wave scattering caused by the variation of the near...
Proceedings Papers
Monopole slow formation shear head wave Green’s function in a LWD borehole acoustic configuration
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751596
... In this paper we revisit a very specialized borehole acoustic computational method to compute the fundamental wave types (head waves and borehole guided modes) that make up the full waveform. This opposed to the Real Axis Integration (RAI) method which only yields the sum of these constituents...
Proceedings Papers
Anthony D. Donovan, Raquel Bryant, Michael C. Pope, Molly McCreary, Sidney Dangtran, Leah Nicole Evans, Aris Pramudito
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751949
... In a research borehole near Dallas, Texas, a 235’ (71.62m) thick succession containing the positive carbon isotope (δC13) excursion associated with the Cenomanian/Turonian Boundary Event (CTBE) is present. More remarkably, based on nearby ammonite work by Kennedy (1988), the portion of the CTBE...
Proceedings Papers
Multidisciplinary site investigations using refraction microtremor surveys
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-w6-01
... require a comprehensive understanding of ground conditions for design. upstream oil & gas society borehole refraction microtremor survey multidisciplinary site investigation american association constraint reservoir characterization representation remi investigation exploration...
Proceedings Papers
Numerical simulation study on borehole time-domain electromagnetic forward-sighted and far-sighted methods of magnetoelectric mixed mode
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3742247
... The time domain electromagnetic method using magnetic source and electrical source in borehole is studied by numerical simulation. The results show that the borehole time-domain electromagnetic measurement through the magnetoelectric mixed emission and reception mode can effectively solve...
Proceedings Papers
Reinterpreting AEM anomalies for brine plumes using ERT and borehole constrained inversions
Available to PurchaseLandon Woods, Alastair McClymont, Paul Bauman, Randy Brehm, Colin Miazga, Randy Shinduke, Max Layton
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584448
... unconstrained inversions can lead to ambiguous results. A constrained inversion using borehole lithologies and ground-based geophysics data as gradient reference and parameter reference constraints provides a more refined model, enabling higher confidence in the interpretation. The purpose of this study...
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